Liquid crystal display panel

ABSTRACT

An LCD panel including a first substrate, a second substrate disposed above the first substrate, a plurality of signal lines disposed on the first substrate, and a plurality of sub-pixel sets arranged between the first substrate and the second substrate. Each sub-pixel set includes a plurality of sub-pixels electrically connected to the corresponding signal lines. Each sub-pixel has at least one alignment pattern located therein. Additionally, the alignment pattern located in one sub-pixel of each sub-pixel set supports between the first substrate and the second substrate as a spacer.

CROSS-REFERENCE TO RELATED APPLICATION

This application claims the priority benefit of Taiwan applicationserial no. 95138010, filed Oct. 16, 2006. All disclosure of the Taiwanapplication is incorporated herein by reference.

BACKGROUND OF THE INVENTION

1. Field of Invention

The present invention relates to a liquid crystal display (LCD) paneland, more particularly, to an LCD panel with excellent display quality.

2. Description of Related Art

Currently, the development of thin film transistor-liquid crystaldisplays (TFT-LCDs) is toward high contrast ratio, no gray scaleinversion, high brightness, high color saturation, quick response, andwide viewing angle, etc in the market. The common wide viewing angletechniques include twisted nematic (TN) type of the liquid crystal withwide viewing film, in-plane switching (IPS) LCD, fringe field switching(FFS) LCD, and multi-domain vertical alignment (MVA) LCD. For example,the MVA. LCD panel uses some alignment patterns, such as alignmentprotrusions or the slits to make liquid crystal molecules in each pixelarranged in multi-orientation, thereby obtaining multiple differentalignment domains. As the alignment protrusions or slits formed on thecolor filter substrate or the TFT array substrate can make the liquidcrystal molecules being arranged in multi-orientation, thereby obtainingmultiple different alignment domains, the conventional MVA LCD panelscan meet the requirement for wide viewing angle.

FIG. 1 is a top schematic view of a conventional MVA LCD panel.Referring to FIG. 1, the conventional transflective MVA LCD panel 100comprises a plurality of alignment protrusions P disposed on a colorfilter substrate, and the alignment protrusions P are corresponding to areflective electrode Re and a transmissive electrode Tr. A main slit SSexists between the reflective electrode Re and the transmissiveelectrode Tr, which is used to make liquid crystals LC at the edge ofthe transmissive electrode Tr and the reflective electrode Re tilttowards the alignment protrusions P. As the alignment protrusions P aredisposed between the reflective electrode Re and the transmissiveelectrode Tr, the alignment protrusions P can change the distribution ofelectric lines to make the liquid crystals LC tilt towards the alignmentprotrusions P, so as to achieve the objective of wide viewing angle.Moreover, a connecting electrode C is disposed between the reflectiveelectrode Re and the transmissive electrode Tr, so that the reflectiveelectrode Re can be electrically connected to the transmissive electrodeTr. The material of the connecting electrode C may be the same as thatof the reflective electrode Re or the transmissive electrode Tr. Thecommon transflective MVA LCD panel 100 may adopt ball spacers tomaintain the cell-gap. However, the design has the disadvantage thatusually a light leakage problem in a dark-state exists around the ballspacers, resulting in the decrease of contrast ratio of thetransflective MVA LCD panel 100. In addition, the current transflectiveMVA LCD panel 100 also uses photo spacers PS on the color filtersubstrate to maintain the cell-gap. Generally, the photo spacers PS aremostly made of an organic material, but the light leakage problem in thedark-state also exists around the photo spacers PS.

In view of the above, as the ball spacers or the photo spacers PS hasthe light leakage problem in dark-state, the arrangement position of theball spacers or the photo spacers PS becomes quite important. Taking thephoto spacers PS on the color filter substrate as an example, in orderto avoid the light leakage problem in dark-state, a stage 110 is usuallydisposed on the thin film transistor array substrate, so that the photospacers PS can stably stand on the stage 110. As shown in FIG. 1, thephoto spacers PS are usually located on a data line DL, so as toeliminate the influence of the photo spacers PS and the stage 110 to theaperture ratio. However, the stage 110 still decreases the apertureratio.

SUMMARY OF THE INVENTION

Accordingly, the present invention provides an LCD panel with excellentoptical representation.

The present invention provides an LCD panel, wherein the effectivedisplay areas of each sub-pixel is substantially equal.

The present invention provides an LCD panel comprising a firstsubstrate, a second substrate disposed above the first substrate, aplurality of signal lines disposed on the first substrate, and aplurality of sub-pixel sets arranged between the first substrate and thesecond substrate is provided. Each sub-pixel set comprises a pluralityof sub-pixels electrically connected to the signal lines, each sub-pixelhas at least one alignment pattern located in the sub-pixel, and thealignment pattern in one of the sub-pixels of each sub-pixel setdisposes between the first substrate and the second substrate as aspacer.

The present invention provides an LCD panel, which comprises a firstsubstrate, a second substrate disposed above the first substrate, aplurality of signal lines disposed on the first substrate, and aplurality of sub-pixel sets arranged between the first substrate and thesecond substrate. Each sub-pixel set comprises a plurality of sub-pixelselectrically connected to the signal lines, each sub-pixel set has aspacer disposed between the first substrate and the second substrate,and each spacer form a region in each corresponding sub-pixel set,wherein the area of the sub-pixel with the region is substantiallygreater than the area of other sub-pixels, and the effective displayarea of the sub-pixel with the region is substantially equal to theeffective display area of other sub-pixels.

In order to the make aforementioned and other objects, features andadvantages of the present invention comprehensible, preferredembodiments accompanied with figures are described in detail below.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a top schematic view of a conventional MVA LCD panel.

FIG. 2 is a top schematic view of an LCD panel of the first embodimentof the present invention.

FIG. 3A is a schematic cross-sectional view taken along the I-I sectionline in FIG. 2.

FIG. 3B is a schematic cross-sectional view taken along the II-IIsection line in FIG. 2.

FIG. 4 is a top schematic view of the LCD panel of the second embodimentof the present invention.

FIGS. 5A and 5B are schematic cross-sectional views taken along theIII-III section line in FIG. 4.

FIGS. 6A to 6D are top schematic views of the LCD panel of the thirdembodiment of the present invention.

FIGS. 7A to 7D are top schematic views of the LCD panel of the fourthembodiment of the present invention.

FIGS. 8A to 8D are top schematic views of the LCD panel of the fifthembodiment of the present invention.

FIG. 9 is a schematic view of an opto-electronic apparatus of thepresent invention.

DESCRIPTION OF EMBODIMENTS The First Embodiment

FIG. 2 is a top schematic view of an LCD panel of the first embodimentof the present invention, FIG. 3A is a schematic cross-sectional viewtaken along the I-I section line in FIG. 2, and FIG. 3B is a schematiccross-sectional view taken along the II-II section line in FIG. 2.Referring to FIGS. 2, 3A, and 3B together, the LCD panel of thisembodiment of the present invention includes a first substrate 210, asecond substrate 220 disposed above the first substrate 210, a pluralityof signal lines 230 disposed above the first substrate 210, and aplurality of sub-pixel sets 240. As shown in FIG. 2, the plurality ofsub-pixel sets 240 is arranged between the first substrate 210 and thesecond substrate 220. Each sub-pixel set 240 includes a plurality ofsub-pixels 240R, 240G, 240B electrically connected to the signal lines230, each of the sub-pixels 240R, 240G, 240B has at least one alignmentpatterns 242, 244 located therein, and the alignment pattern 244 in oneof the sub-pixels (e.g. the sub-pixel 240B) in each sub-pixel setdisposed between the first substrate 210 and the second substrate 220 soas to support the first substrate 210 and the second substrate 220 as aspacer S. In this embodiment, the spacer S may be fabricated on thefirst substrate 210 or on the second substrate 220, and is made of, forexample, an organic material. However, the material of the spacer S isnot limited to the organic material in the present invention, and can beother suitable materials.

As shown in FIG. 2 that a main slit SS exists between a reflectiveelectrode 214R and a transmissive electrode 214T, which is used to makeliquid crystals LC at the edge of the transmissive electrode 214T andthe reflective electrode 214R tilt towards alignment protrusions 242,244. As the alignment protrusions 242, 244 are disposed between thereflective electrode 214R and the transmissive electrode 214T, thealignment protrusions 242, 244 may change the distribution of electriclines to make the liquid crystal LC tilt towards the alignmentprotrusions 242, 244, so as to achieve the objective of the wide viewingangle. Moreover, a connecting electrode C exists between the reflectiveelectrode 214R and the transmissive electrode 214T, so that thereflective electrode 214R can be electrically connected to thetransmissive electrode 214T. The electrode material of the connectingelectrode C may be the same as that of the reflective electrode 214R,the transmissive electrode 214T, or combinations thereof.

In this embodiment of the present invention, although three sub-pixels240R, 240G, 240B are used as a sub-pixel set 240, the quantity of thesub-pixels in each sub-pixel set 240 is not limited in the presentinvention, i.e. the quantity of the sub-pixels is an integer greaterthan or equal to 2. The quantity of the sub-pixels in each sub-pixel set240 is relative to the distribution density of the spacers S, and thoseof ordinary skill in the art can determine the quantity of thesub-pixels in each sub-pixel set 240 according to the requireddistribution density of the spacers S. It should be noted that thequantity of the sub-pixels in each sub-pixel set 240 and the quantity ofthe sub-pixels in each pixel have no absolute relation. In detail, eachpixel generally is formed by three sub-pixels (e.g. the sub-pixels 240R,240G, 240B), and the quantity of the sub-pixels in each sub-pixel set240 may be equal to 3 or may not be equal to 3.

For example, the first substrate 210 and the second substrate 220 are,for example, rigid substrates (such as glass substrates, quartzsubstrates, silicon substrates, ceramic, or likes) or flexiblesubstrates (such as plastic substrates, or likes). The signal lines 230on the first substrate 210 include a plurality of scan lines 232 and aplurality of data lines 234. In addition, the sub-pixels 240R, 240G,240B of this embodiment include transmissive sub-pixels, reflectivesub-pixels, transflective sub-pixels, or the combination thereof, andonly the transflective sub-pixels are shown in FIGS. 2, 3A, and 3B as anexemplification of this embodiment of the present invention toillustration. When the sub-pixels 240R, 240G, 240B are transflectivesub-pixels, the sub-pixels 240R, 240G, 240B may be transflectivesub-pixels with single cell-gap, transflective sub-pixels with dualcell-gap, or the combination thereof, and the transflective sub-pixelswith dual cell-gap are shown in FIGS. 2, 3A, and 3B as anexemplification of this embodiment of the present invention toillustration.

It can be known form FIGS. 2, 3A, and 3B that the sub-pixels 240R, 240G,240B have a reflective multi-domain display region R and a transmissivemulti-domain display region T adjacent to the reflective multi-domaindisplay region R, and each of the sub-pixels 240R, 240G, 240B includes acommon electrode 222 disposed on the second substrate 220, an activedevice 212 disposed on the first substrate 210, a reflective electrode214R disposed in the reflective multi-domain display region R, atransmissive electrode 214T disposed in the transmissive multi-domaindisplay region T, and a liquid crystal layer LC disposed between thecommon electrode 222 and the reflective electrode 214R and between thecommon electrode 222 and the transmissive electrode 214T. The reflectiveelectrode 214R and the transmissive electrode 214T are electricallyconnected to each other, and electrically connected to the correspondingsignal line 230 through the active device 212. In detail, the reflectiveelectrode 214R and transmissive electrode 214T electrically connectedwith each other may be electrically connected to the corresponding scanline 232 and the data line 234 through the active device 212.

It can be known from FIG. 2 that the spacers S are located in a part ofthe reflective multi-domain display region R. In detail, each sub-pixel240 has one spacer S, and the spacer S may be located above onereflective electrode 214R of the sub-pixel set 240. In order to make thespacer S stably stand on the corresponding reflective electrode 214R, inthis embodiment, a planar region F is designed on the reflectiveelectrode 214R under the spacer S. It should be noted that the planarregion F of the reflective electrode 214R can reduce the effectivereflective area of the reflective electrode 214, thus further reducingthe aperture ratio of the reflective multi-domain display region R. Asthe distribution position of the spacer S is above one reflectiveelectrode 214R, in order to make the effective reflective areas (i.e.effective display areas) of all the reflective electrodes 214R to besubstantially equal, in this embodiment, a planar region F correspondingto the alignment pattern 242 is disposed in other reflective electrode214, and the areas of all the planar regions F are substantially thesame.

It can be known from FIGS. 3A and 3B that besides the common electrode222, other film layers can be fabricated on the second substrate 220 ofthis embodiment according to the requirements. For example, the secondsubstrate 220 can further include a black matrix BM, color filter layers224R, 224G, 224B, an overcoat 226, and a stepper 228 on color filter.The black matrix BM is disposed on the second substrate 220, and thecolor filter layers 224R, 224G, 224B overlay on the black matrix BM andthe second substrate 220. Moreover, the overcoat 226 overlays on thecolor filter layers 224R, 224G, 224B, and the stepper 228 on colorfilter overlay on a part of the overcoat 226. It should be noted thatthe stepper 228 on color filter is mainly used to adjust the cell-gap ofthe reflective multi-domain display region R, such that the cell-gap ofthe transmissive multi-domain display region T is substantially twice ofthe reflective multi-domain display region R, but the present inventionis not limited herein, as long as the cell-gap of the transmissivemulti-domain display region T is substantially greater than thereflective multi-domain display region R. The material of the blackmatrix BM comprises a single layer or multi-layer of metal, organicmaterial, color photoresist, or the combination thereof. For example,the black matrix BM can be formed by stacking a plurality of colorphotoresists.

As in this embodiment, the spacers S with alignment function substitutea part of the alignment pattern 242, it is not necessary to dispose anadditional spacers to maintain the cell-gap between the first substrate210 and the second substrate 220, and this design promotes the increaseof the aperture ratio of the LCD panel 200 a. In addition, the planarregion F is disposed in each reflective electrode 214R to make theeffective display areas of all the reflective multi-domain displayregions R to be the same, thus improving the display quality of the LCDpanel 200 a.

The Second Embodiment

In the following embodiment and drawings, the same or like numbers standfor the same or like elements for simple illustration.

FIG. 4 is a top schematic view of the LCD panel of the second embodimentof the present invention, and FIGS. 5A and 5B are schematiccross-sectional views taken along the III-III section line in FIG. 4.Referring to FIG. 4, the LCD panel 200 b of this embodiment is similarto the LCD panel 200 a of the first embodiment, except that in the LCDpanel 200 b, the spacers S are disposed in the transmissive multi-domaindisplay region T.

In order to improve the display quality of the transmissive multi-domaindisplay region T, in this embodiment, a shielding pattern SH may bedisposed on the transmissive electrode 214T (as shown in FIG. 5B), so asto avoid the light leakage in the dark-state caused by the spacer S andthe alignment pattern 242. In addition, in this embodiment, a shieldingpattern SH may be disposed above the spacer S and the alignment pattern242 (as shown in FIG. 4 and FIG. 5A), so as to avoid the light leakagein the dark-state caused by the spacers S and the alignment pattern 242.For example, the shielding pattern SH may be integrated with the blackmatrix BM. It should be noted that in this embodiment, the areas of theshielding patterns SH in each transmissive multi-domain display region Tcan be made to be substantially equal, so as to make the effectivetransmissive areas (i.e. effective display areas) of all thetransmissive electrode 214R to be substantially equal. The material ofthe black matrix BM comprises a single layer or a multi-layer of metal,organic material, color photoresist, or the combination thereof. Forexample, the black matrix BM may be formed by stacking a plurality ofcolor photoresists. Accordingly, the material of the shielding patternsSH adopted by this embodiment may be same as or different from thematerial of the black matrix BM.

The Third Embodiment

FIGS. 6A to 6D are top schematic views of the LCD panel of the thirdembodiment of the present invention. Referring to FIGS. 3B and 6Atogether, the LCD panel 200 c of this embodiment is similar to the LCDpanel 200 a of the first embodiment, except that each of the sub-pixels240R, 240G, 240B of this embodiment has two transmissive multi-domaindisplay regions (i.e. the first transmissive multi-domain display regionT1 and the second transmissive multi-domain display region T2), and afirst transmissive electrode 214T1 and a second transmissive electrode214T2 are respectively disposed in the first transmissive multi-domaindisplay region T1 and the second transmissive multi-domain displayregion T2. Moreover, the reflective electrode 214R, the firsttransmissive electrode 214T1, and the second transmissive electrode214T2 are electrically connected with one another, and electricallyconnected to the corresponding signal line 230 through the active device212. In detail, the reflective electrode 214R, first transmissiveelectrode 214T1, and second transmissive electrode 214T2 electricallyconnected with one another are electrically connected to thecorresponding scan line 232 and data line 234 through the active device212.

Next, referring to FIGS. 6B to 6D, in this embodiment, the LCD panels200 d, 200 e, 200 f are similar to the LCD panel 200 c, but different inthe distribution positions of the spacer S and the shielding pattern SHin the LCD panels 200 d, 200 e, 200 f. In detail, the spacer S and theshielding pattern SH are, for example, distributed in the firsttransmissive multi-domain display region T1 of each sub-pixel (as shownin FIG. 6B), or distributed in the second transmissive multi-domaindisplay region T2 of each sub-pixel (as shown in FIG. 6C). Definitely,the spacer S and the shielding pattern SH may also be distributed in thefirst transmissive multi-domain display region T1 and the secondtransmissive multi-domain display region T2 in different sub-pixels (asshown in FIG. 6D). The material of the shielding pattern SH may be thesame as or different from the material of the black matrix BM, and thematerial of the shielding pattern SH may be formed by a single layer ora multi-layer of metal, organic material, color photoresist, or thecombination thereof. For example, the black matrix BM may be formed bystacking a plurality of color photoresists.

The Fourth Embodiment

FIGS. 7A to 7D are top schematic views of the LCD panel of the fourthembodiment of the present invention. Referring to FIG. 7A, the LCD panel200 g of this embodiment is similar to that of the first embodiment,except that each spacer S in the LCD panel 200 g forms a region X ineach corresponding sub-pixel set 240, wherein the area of the sub-pixel240 with the region X is substantially greater than that of the othersub-pixel 240R, 240G, and the effective display area of the sub-pixel240B with the region X is substantially equal to the effective displayarea of other sub-pixels 240R and 240G.

It is known from FIG. 7A that the region X is located in a part of thereflective multi-domain display region R. In detail, each sub-pixel set240 includes three sub-pixels 240R, 240G, 240B. If the average of theareas of the reflective multi-domain display regions R in the threesub-pixels 240R, 240G, 240B is A1 and the area of each region is B, inthis embodiment, the area of the reflective multi-domain display regionR with the region X is designed to be [A1+(2B/3)], and the area of otherreflective multi-domain display regions R is designed to be [A1−(B/3)].However, the quantity of the sub-pixels in each sub-pixel set 240 is notlimited in the present invention. If each sub-pixel set includes Nsub-pixels, the average of the areas of the reflective multi-domaindisplay regions in N sub-pixels is A1, and the area of each region is B,in this embodiment, the area of the reflective multi-domain displayregion R with the region X is designed to be [A1+((N−1)*B/N)], and thearea of other reflective multi-domain display regions R is designed tobe [A1−(B/N)], i.e. the quantity of the N sub-pixels is substantiallygreater than 1, for example 2, 3, 4, 5, 6, . . . , N.

In view of the above, the region X can be located in a part of thetransmissive multi-domain display region T, for example the LCD panel200 h shown in FIG. 7B. In detail, each sub-pixel set 240 includes threesub-pixels 240R, 240G, 240B. If the average of the areas of thetransmissive multi-domain display regions T in the three sub-pixels240R, 240G, 240B is A2 and the area of each region is B, in thisembodiment, the area of the transmissive multi-domain display region Twith the region X is designed to be [A2+(2B/3)], and the area of othertransmissive multi-domain display regions T is designed to be[A2−(B/3)]. However, the quantity of the sub-pixels in each sub-pixelset 240 is not limited in the present invention. If each sub-pixel set240 includes N sub-pixels, the average of the areas of the transmissivemulti-domain display regions T in N sub-pixels is A2 and the area ofeach region X is B, in this embodiment, the area of the transmissivemulti-domain display region T with the region X may be designed to be[A2+((N−1)*B/N)], and the area of other transmissive multi-domaindisplay regions T is designed to be [A2−(B/N)], i.e. the quantity of theN sub-pixels is greater than 1, for example, 2, 3, 4, 5, 6, . . . , N.

Then, referring to FIGS. 7C and 7D, the LCD panel 200 i is similar tothe LCD panel 200 g, and the LCD panel 200 j is similar to the LCD panel200 h, except that each of the sub-pixels 240R, 240G, 240B in the LCDpanel 200 i and the LCD panel 200 j do not have the alignment pattern242. In other words, besides the MVA LCD panel, the design concept ofthis embodiment can also be applied in other LCD panel without thealignment pattern.

The Fifth Embodiment

FIGS. 8A to 8D are top schematic views of the LCD panel of the fifthembodiment of the present invention. Referring to FIG. 8A, the LCD panel200 k of this embodiment is similar to the LCD panel 200 g of the fourthembodiment, except that the region X formed by each spacer S in the LCDpanel 200 k may span across two of the adjacent reflective multi-domaindisplay regions R. The areas of the sub-pixel 240B′, 240R′ with theregion X may be substantially greater than the other sub-pixels 240R,240G, 240B, and the effective display areas of the sub-pixels 240B′,240R′ with the region X may be substantially equal to the effectivedisplay areas of other sub-pixels 240R, 240G, 240B.

It is known from FIG. 8A that the region X is located in a part of thereflective multi-domain display region R. In detail, each sub-pixel set240 includes six sub-pixels 240B′, 240R′, 240R, 240G, 240B. If theaverage of the areas of the reflective multi-domain display regions R inthe six sub-pixels 240B′, 240R′, 240R, 240G, 240B is A1 and the area ofeach region X is B, in this embodiment, the area of the two reflectivemulti-domain display regions R with the region X is [A1+(B/3)], and thearea of other reflective multi-domain display regions R is [A1−(B/6)].However, the quantity of the sub-pixels in each sub-pixel set 240 is notlimited in the present invention. If each sub-pixel set includes Nsub-pixels, the average of the areas of the reflective multi-domaindisplay regions R in the N sub-pixels is A1, and the area of each regionX is B, the area of the two reflective multi-domain display regions Rwith the region X is [A1+((N−2)*B/2N)], and the area of other reflectivemulti-domain display regions R is [A1−(B/N)], i.e. the quantity of the Nsub-pixels is greater than 1, for example 2, 3, 4, 5, 6, . . . , N.

In view of the above, the region X may be located in a part of thetransmissive multi-domain display region T, for example the LCD panel200 l as shown in FIG. 8B. In detail, each sub-pixel set 240 includessix sub-pixels 240B′, 240R′, 240R, 240G, 240B. If the average of theareas of the transmissive multi-domain display regions T in the sixsub-pixels 240B′, 240R′, 240R, 240G, 240B is A2 and the area of eachregion X is B, in this embodiment, the area of the transmissivemulti-domain display region T with the region X is designed to be[A2+(B/3)], and the area of other transmissive multi-domain displayregions T is designed to be [A2−(B/6)]. However, the quantity of thesub-pixels in each sub-pixel set 240 is not limited in the presentinvention. If each sub-pixel set 240 includes N sub-pixels, the averageof the areas of the transmissive multi-domain display regions T in the Nsub-pixels is A2 and the area of each region X is B, in this embodiment,the area of the transmissive multi-domain display region T with theregion X is designed to be [A2+((N−2)*B/2N)], and the area of othertransmissive multi-domain display regions T is designed to be[A2−(B/N)], i.e. the quantity of the N sub-pixels is greater than 1, forexample 2, 3, 4, 5, 6, . . . , N. However, the transmissive multi-domaindisplay regions T can be located at some region that is far away formthe region within active device.

Next, referring to FIGS. 8C and 8D, the LCD panel 200 m is similar tothe LCD panel 200 k, and the LCD panel 200 n is similar to the LCD panel200 l, except that each of the sub-pixels 240B′, 240R′, 240R, 240G, 240Bin the LCD panel 200 m and the LCD panel 200 n does not have thealignment pattern 242. In other words, besides the MVA LCD panel, thedesign concept of this embodiment may also be applied in other LCD panelwithout the alignment pattern. However, the transmissive multi-domaindisplay regions in the FIG. 8D (not shown) can be located at some regionthat is far away form the region within active device.

For example, in this embodiment, the position of the region X may belocated on the signal line 230 (including at least one of the scan line232 or the data line 234) of the first substrate 210, or may be locatedon the black matrix BM of the second substrate 220, but in thisembodiment, the region X located on the data line 234 is taken as anexample for illustration. The material of the black matrix BM is, forexample, formed by a single layer or a multi-layer of metal, organicmaterial, color photoresist, or the combination thereof. For example,the black matrix BM may be formed by stacking a plurality of colorphotoresists.

Further, the sub-pixels of the embodiments of the present invention are,for example, red sub-pixels, green sub-pixels, and blue sub-pixels forillustration, and in principle, the position of the spacer S will notinfluence the viewer's sensitivity to colors. That is, the colorsub-pixels including sub-pixels of red, green, blue, or other colors inthe color index coordinate (CIE), such as white, pink, yellow, orange,tangerine, fuschin red, purple, brown, cyan, indigo, bluish green, andblack can be used. Preferably, the position of the spacer of theembodiment of the present invention is, for example, in the bluesub-pixel. However, in the present invention, the spacer is not limitedto be disposed in the blue sub-pixel, the position of the spacer S maybe located on the red sub-pixel, the green sub-pixel, or the sub-pixelsof other colors. Definitely, the position of the spacer S of theembodiment of the present invention may be determined by using thefollowing rule. For example, which color sub-pixel the spacer S islocated on is determined by the absolute value of the lighttransmittance of the neighboring sub-pixels substantially in 50% to 10%,and preferably, the absolute value of the light transmittancesubstantially in 10% to 20%. Moreover, in the embodiments, the regulararrangement of the spacers is taken as the implementation example, butit is not limited herein. For example, the arrangement of six sub-pixelsof FIG. 2 and FIG. 3 is taken as an example for illustration, when thespacers of the first sub-pixel set are arranged in the manner of FIG. 2,and the spacers of the second sub-pixel set are arranged in the mannerof FIG. 3, the spacers of the sub-pixel set of the last column arearranged in the manner of FIG. 2, and the spacers of the sub-pixel setof the next column are arranged in the manner of FIG. 3, or the spacersof the sub-pixel set of a certain column are arranged in the manner ofFIG. 2, and the spacers of the sub-pixel set of the last column arearranged in the manner of FIG. 3, and the position of the spacer of thecolumn is located on the oblique diagonal of the position of the spacerof another column. Therefore, all the graphs of the embodiments of thepresent invention can be used in cooperation. It should be noted thatthe arrangement of the plurality of sub-pixel sets of the embodiments ofthe present invention are matrix arrangement, but it is not limitedherein and can also be delta type, mosaic type, or other arrangements,or the combination thereof. Also, the shape of each sub-pixel of theplurality of sub-pixel sets of the embodiments of the present inventionis not limited to be rectangular, and can also be other shaped, forexample, substantially rhombus, substantially square, substantiallyhexagonal, substantially pentagonal etc., or the combination thereof.

In addition, the sub-pixel structure of the embodiments of the presentinvention is, for example, a common structure, that is the firstsubstrate with the signal line or other elements and the secondsubstrate with the color filter layer or other film layers. The presentinvention is not limited to this, and can also use the first substratewith the signal line, the color filter layer, or other elements and thesecond substrate without the color filter. When the color filter layeris fabricated on the first substrate, and the color filter layer islocated on the signal line or other elements, this architecture isreferred to as COA (color filter on array) architecture. When the colorfilter layer is located under the signal line or other elements, thisarchitecture is referred to as AOC (array on color filter) architecture.In addition, although the alignment structure of the embodiments of thepresent invention is, for example, protrusions, but it is not used tolimit the present invention. The present invention can also use theslits to replace the protrusions, or can use the protrusions and theslits simultaneously to perform alignment on the liquid crystal. Also,the alignment structure and the spacer can be located on at least one ofthe first substrate or the second substrate.

FIG. 9 is a schematic view of an opto-electronic apparatus of thepresent invention. Referring to FIG. 9, the LCD panels 200 a to 200 n ofthe embodiment of the present invention may also be applied in anopto-electronic apparatus 300, and the photoelectric apparatus 300further has a electronic element 310 such as control element, operatingelement, processing element, input element, memory element, drivingelement, light emitting element, protecting element, or other functionalelement, or the combination thereof, which is connected to the LCDpanels 200 a to 200 n. The types of the opto-electronic apparatusinclude the portable products (e.g. mobile phones, video cameras,cameras, notebook computers, game machines, watches, music players,electronic mail transceivers, map navigators, or the similar products),the audio visual products (e.g. audio visual players or the similarproducts), screens, TV sets, or signboards.

To sum up, the LCD panel of the present invention has at least thefollowing advantages:

1. As the present invention adopts the spacer with the alignmentfunction to replace the alignment pattern in a part of the sub-pixels,the spacer arrangement will not influence the aperture ratio of thesub-pixel.

2. In a part of the embodiments of the present invention, the designercan increase the area of the sub-pixel with the region according to therequirements (being substantially greater than the average of the areaof the sub-pixel), and reduce the area of other sub-pixels (beingsubstantially smaller than the average of the area of the sub-pixel), soas to make the effective display area of the sub-pixel with the regionto be substantially equal to the effective display area of othersub-pixels, and further the LCD panel have an good display quality.

It will be apparent to those skilled in the art that variousmodifications and variations can be made to the structure of the presentinvention without departing from the scope or spirit of the invention.In view of the foregoing, it is intended that the present inventioncover modifications and variations of this invention provided they fallwithin the scope of the following claims and their equivalents.

1. A liquid crystal display (LCD) panel, comprising: a first substrate;a second substrate disposed above the first substrate; a plurality ofsignal lines disposed on the first substrate; and a plurality ofsub-pixel sets, arranged between the first substrate and the secondsubstrate, wherein each sub-pixel set comprises a plurality ofsub-pixels electrically connected to the signal lines, each sub-pixelhas at least one alignment pattern located therein, a reflectivemulti-domain display region and a transmissive multi-domain displayregion adjacent to the reflective multi-domain display region, and thealignment pattern located in one of the sub-pixels of each sub-pixel setis disposed between the first substrate and the second substrate as aspacer, the spacer is located in a part of the transmissive multi-domaindisplay region.
 2. An opto-electronic apparatus incorporating the LCDpanel of claim
 1. 3. The LCD panel of claim 1, wherein the sub-pixelsare transflective sub-pixels, and the transflective sub-pixels comprisetransflective sub-pixels with single cell-gap, transflective sub-pixelswith dual cell-gap, or combinations thereof.
 4. The LCD panel of claim1, wherein each sub-pixel comprises: a common electrode disposed on thesecond substrate; an active device disposed on the first substrate; areflective electrode disposed in the reflective multi-domain displayregion; a transmissive electrode disposed in the transmissivemulti-domain display region, wherein the reflective electrode and thetransmissive electrode are electrically connected to each other andelectrically connected to the corresponding signal line through theactive device; and a liquid crystal layer disposed between the commonelectrode and the reflective electrode and between the common electrodeand the transmissive electrode.
 5. The LCD panel of claim 1, furthercomprising a plurality of shielding patterns disposed corresponding tothe alignment patterns located in the transmissive multi-domain displayregion, wherein areas of the shielding patterns are substantially equal.6. The LCD panel of claim 4, wherein each reflective electrode has aplanar region corresponding to the alignment patterns, and areas of theplanar regions are substantially equal.
 7. The LCD panel of claim 1,wherein the transmissive multi-domain display region comprises a firsttransmissive multi-domain display region and a second transmissivemulti-domain display region adjacent to the first transmissivemulti-domain display region, and each sub-pixel comprises: a commonelectrode disposed on the second substrate; an active device disposed onthe first substrate; a reflective electrode disposed in the reflectivemulti-domain display region; a first transmissive electrode disposed inthe first transmissive multi-domain display region; a secondtransmissive electrode disposed in the second transmissive multi-domaindisplay region, wherein the reflective electrode, the first transmissiveelectrode, and the second transmissive electrode are electricallyconnected to each other and electrically connected to the correspondingsignal line through the active device; and a liquid crystal layerdisposed between the common electrode and the reflective electrode andbetween the common electrode and the transmissive electrode.
 8. The LCDpanel of claim 7, further comprising: a plurality of first shieldingpatterns disposed corresponding to a part of the alignment patternslocated in the first transmissive multi-domain display regions; and aplurality of second shielding patterns disposed corresponding to a partof the alignment patterns located in the second transmissivemulti-domain display regions, wherein areas of each first shieldingpattern and each second shielding pattern are substantially equal. 9.The LCD panel of claim 7, wherein the spacers are located in a part ofthe second transmissive multi-domain display region.
 10. The LCD panelof claim 9, further comprising a plurality of second shielding patternsdisposed corresponding to the alignment patterns located in the secondtransmissive multi-domain display regions, wherein areas of the secondshielding patterns are substantially equal.
 11. The LCD panel of claim7, wherein each reflective electrode has a planar region correspondingto the alignment patterns, and areas of the planar regions aresubstantially equal.
 12. The LCD panel of claim 7, wherein the spacersare located in a part of the first transmissive multi-domain displayregion.
 13. The LCD panel of claim 12, further comprising a plurality offirst shielding patterns disposed corresponding to the alignmentpatterns located in the first transmissive multi-domain display regions,wherein areas of the first shielding patterns are substantially equal.